Definition
A computer terminal system used by air traffic control facilities, primarily towers and terminal radar approach control facilities, to send and receive flight plan data and related messages between facilities and with the en route host computer. It allows controllers to view, print, amend, and transmit flight strips and flight plan information electronically.
Plain English
A computer at an ATC facility that lets controllers send and receive flight plan information with other ATC facilities. It is how flight strips and updates move between the tower, approach control, and the en route center.
Context Anchor
You may see FDIO in FAA acronym lists, facility notices, or discussions of air traffic control equipment status.
Why Pilots Care
When you file or amend an IFR flight plan, the FDIO is part of the path your data travels through to reach the controllers who will work your flight. Knowing it exists helps explain why amendments and clearances sometimes take a few minutes to propagate between facilities.
Intuition Check
Do not read FDIO as a cockpit instrument or a pilot control. In this context, it refers to air traffic control equipment for handling flight data.
Example Sentence 1
The tower controller pulled up the inbound flight's strip on the FDIO to confirm the amended routing.
Example Sentence 2
Flight service specialists use the FDIO to check and update pilot flight plans.